US Patent 7669564 Variable valve lift internal combustion engine

Patent 7669564 was granted and assigned to Honda on March, 2010 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Honda

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7669564

Date of Patent

March 2, 2010

Patent Application Number

11902406

Date Filed

September 21, 2007

Patent Primary Examiner

‌

Ching Chang

Patent abstract

Provided is a variable valve lift internal combustion engine including a control shaft pivotally supported by a cylinder head via a pivot arm pivotally supported by the cylinder head so as to able to move angularly around a rotational center line extending in parallel with an axial line of the control shaft, a power transmitting member supported by the control shaft, an actuator for causing an angular movement of the control shaft around the rotational center line via the power transmitting member and a control arm having a base end pivotally supported by the control shaft and a free end interposed between a cam lobe of an engine camshaft and a part of a rocker arm. The lift of the engine valve can be varied by angularly moving the control shaft around the rotational center line and moving the base end of the control arm.